﻿#if UNITY_EDITOR

using UnityEngine;
using System.Collections;
using System;
using UnityEditor;

namespace Sabresaurus.SabreCSG
{
    public enum MainMode
    {
        Resize,
        Vertex,
        Face,

		Clip,
		Draw,
        Paint,
	};

    public enum OverrideMode
    {
        None,
        TransformModel, // Dummy mode that prevents active tools conflicting
                        //Clip,
                        //Draw,
    };

    public enum GridMode
    {
        Unity,
        SabreCSG,
        None
    }

    [ExecuteInEditMode]
    public class CurrentSettings : ScriptableObject
    {
        private bool brushesHidden = false;
        private bool meshHidden = false;
        private bool snapSelectionToCurrentGrid;
        private bool alwaysSnapToCurrentGrid;
        private Material foregroundMaterial;

        private static CurrentSettings instance = null;

        private static CurrentSettings Instance
        {
            get
            {
                // Instance reference lost or not set
                if (instance == null)
                {
                    // First of all see if a CurrentSettings object exists
                    instance = FindObjectOfType<CurrentSettings>();

                    // Couldn't find an existing object, make a new one
                    if (instance == null)
                    {
                        instance = ScriptableObject.CreateInstance<CurrentSettings>();
                    }
                }
                return instance;
            }
        }

        private const string KEY_PREFIX = "SabreCSG";

        public static bool PositionSnappingEnabled
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "positionSnappingEnabled", 1) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "positionSnappingEnabled", value ? 1 : 0);
            }
        }

        public static float PositionSnapDistance
        {
            get
            {
                return PlayerPrefs.GetFloat(KEY_PREFIX + "positionSnapDistance", 1f);
            }
            set
            {
                if (value > 0)
                {
                    PlayerPrefs.SetFloat(KEY_PREFIX + "positionSnapDistance", value);
                }
            }
        }

        public static bool AngleSnappingEnabled
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "angleSnappingEnabled", 1) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "angleSnappingEnabled", value ? 1 : 0);
            }
        }

        public static bool HideGridInPerspective
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "HideGridInPerspective", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "HideGridInPerspective", value ? 1 : 0);
            }
        }

        public static bool OverrideFlyCamera
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "OverrideFlyCamera", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "OverrideFlyCamera", value ? 1 : 0);
            }
        }

        public static bool ShowExcludedPolygons
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "ShowExcludedPolygons", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "ShowExcludedPolygons", value ? 1 : 0);
            }
        }

        public static bool ShowBrushesAsWireframes
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "ShowBrushesAsWireframes", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "ShowBrushesAsWireframes", value ? 1 : 0);
                float faceToggle = value ? 0.0f : 1.0f;
                SabreCSGResources.GetAddMaterial().SetFloat("_FaceToggle", faceToggle);
                SabreCSGResources.GetSubtractMaterial().SetFloat("_FaceToggle", faceToggle);
                SabreCSGResources.GetVolumeMaterial().SetFloat("_FaceToggle", faceToggle);
                SabreCSGResources.GetNoCSGMaterial().SetFloat("_FaceToggle", faceToggle);
                SabreCSGResources.GetCollisionMaterial().SetFloat("_FaceToggle", faceToggle);
            }
        }

        public static bool ShowBrushBoundsGuideLines
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "ShowBrushBoundsGuideLines", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "ShowBrushBoundsGuideLines", value ? 1 : 0);
            }
        }

        public static bool ShowHiddenGameObjectsInHierarchy
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "ShowHiddenGameObjectsInHierarchy", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "ShowHiddenGameObjectsInHierarchy", value ? 1 : 0);
            }
        }

        public static bool ReducedHandleThreshold
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "ReducedHandleThreshold", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "ReducedHandleThreshold", value ? 1 : 0);
            }
        }

        public static float AngleSnapDistance
        {
            get
            {
                return PlayerPrefs.GetFloat(KEY_PREFIX + "angleSnapDistance", 15);
            }
            set
            {
                if (value > 0)
                {
                    PlayerPrefs.SetFloat(KEY_PREFIX + "angleSnapDistance", value);
                }
            }
        }

        public static Material ForegroundMaterial
        {
            get
            {
                return Instance.foregroundMaterial;
            }
            set
            {
                Instance.foregroundMaterial = value;
            }
        }

        public static bool ProjectedGridEnabled
        {
            get
            {
                return PlayerPrefs.GetInt(KEY_PREFIX + "ProjectedGridEnabled", 0) != 0;
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "ProjectedGridEnabled", value ? 1 : 0);
                float gridToggle = value ? 1.0f : 0.0f;
                SabreCSGResources.GetAddMaterial().SetFloat("_GridToggle", gridToggle);
                SabreCSGResources.GetSubtractMaterial().SetFloat("_GridToggle", gridToggle);
                SabreCSGResources.GetVolumeMaterial().SetFloat("_GridToggle", gridToggle);
                SabreCSGResources.GetNoCSGMaterial().SetFloat("_GridToggle", gridToggle);
                SabreCSGResources.GetCollisionMaterial().SetFloat("_GridToggle", gridToggle);
            }
        }

        public static GridMode GridMode
        {
            get
            {
                string storedValue = PlayerPrefs.GetString(KEY_PREFIX + "gridMode");
                if (Enum.IsDefined(typeof(GridMode), storedValue))
                {
                    return (GridMode)Enum.Parse(typeof(GridMode), storedValue);
                }
                else
                {
                    return GridMode.SabreCSG;
                }
            }
            set
            {
                PlayerPrefs.SetString(KEY_PREFIX + "gridMode", value.ToString());
            }
        }

        public static void ChangePosSnapDistance(float multiplier)
        {
            PositionSnapDistance *= multiplier;
            SabreCSGResources.GetAddMaterial().SetFloat("_GridSize", PositionSnapDistance);
            SabreCSGResources.GetSubtractMaterial().SetFloat("_GridSize", PositionSnapDistance);
            SabreCSGResources.GetVolumeMaterial().SetFloat("_GridSize", PositionSnapDistance);
            SabreCSGResources.GetNoCSGMaterial().SetFloat("_GridSize", PositionSnapDistance);
            SabreCSGResources.GetCollisionMaterial().SetFloat("_GridSize", PositionSnapDistance);
        }

        public static void ChangeAngSnapDistance(float multiplier)
        {
            AngleSnapDistance *= multiplier;
        }

        public static bool BrushesHidden
        {
            get
            {
                return Instance.brushesHidden;
            }
            set
            {
                Instance.brushesHidden = value;
            }
        }

        public static bool MeshHidden
        {
            get
            {
                return Instance.meshHidden;
            }
            set
            {
                Instance.meshHidden = value;
            }
        }

        // TODO: This behaves differently to just !brushesHidden, need to make the two properties less ambiguous
        public static bool BrushesVisible
        {
            get
            {
                return !Instance.brushesHidden;
            }
        }

        public static bool AllowMeshSelection
        {
            get
            {
                return false;
            }
        }

        public static MainMode CurrentMode
        {
            get
            {
                int storedValue = PlayerPrefs.GetInt(KEY_PREFIX + "-CurrentMode", 0);

                if (storedValue >= Enum.GetNames(typeof(MainMode)).Length || storedValue < 0)
                {
                    return default(MainMode);
                }
                else
                {
                    return (MainMode)storedValue;
                }
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "-CurrentMode", (int)value);
                // Occassionally have experienced issues where camera locks up, resetting the Tools class seems to fix it
                Tools.viewTool = ViewTool.None;
                Tools.current = UnityEditor.Tool.None;
            }
        }

        public static OverrideMode OverrideMode
        {
            get
            {
                int storedValue = PlayerPrefs.GetInt(KEY_PREFIX + "-OverrideMode", 0);

                if (storedValue >= Enum.GetNames(typeof(OverrideMode)).Length || storedValue < 0)
                {
                    return default(OverrideMode);
                }
                else
                {
                    return (OverrideMode)storedValue;
                }
            }
            set
            {
                PlayerPrefs.SetInt(KEY_PREFIX + "-OverrideMode", (int)value);
                // Occassionally have experienced issues where camera locks up, resetting the Tools class seems to fix it
                Tools.viewTool = ViewTool.None;
                Tools.current = UnityEditor.Tool.None;
            }
        }

        public static bool AlwaysSnapToCurrentGrid {
            get {
                return PlayerPrefs.GetInt(KEY_PREFIX + "alwaysSnapToCurrentGrid") == 1;
            }
            set {
                PlayerPrefs.SetInt(KEY_PREFIX + "alwaysSnapToCurrentGrid", value ? 1 : 0);
            }
        }

        // Experimental options

        public static MainMode[] enabledModes {
            get {
                MainMode[] output = (MainMode[]) Enum.GetValues(typeof(MainMode));

                if (!VertexPaintToolEnabled) {
                    output = Array.FindAll(output, e => { return e != MainMode.Paint; });
                }

                return output;
            }
        }

        public static bool VertexPaintToolEnabled {
            get {
                return PlayerPrefs.GetInt(KEY_PREFIX + "VertexPaintToolEnabled") == 1;
            }
            set {
                PlayerPrefs.SetInt(KEY_PREFIX + "VertexPaintToolEnabled", value ? 1 : 0);
            }
        }
    }
}

#endif